Morcott tunnel, just visible within the map - Is it stable & Safe, what works will it need to bring it back into use?
I understand, from the website, it is in good condition. Pass on what would be needed to bring it back into use.
This is a significant problem, at Morcott at least. There is a house on top of what was once an embankment, where the side of the embankment has been regraded (so as to be less severe) and turfed over as a lawn. This is directly between the exit portal of Morcott tunnel (towards Luffenham) and the bridge which carries Station Road.
As you observe, I don't think the residents would be too happy. You'd essentially have to demolish that house and their immediate neighbours also might not be too keen!
I took a little trip to see how this actually looked from the ground, and I have to agree with
@zwk500 and retract some of my previous statements.
Figure 1 is looking towards Seaton, with back facing the Luffenham direction, onto the bridge which carries the Corby line over the viaduct (to the left) from the tunnel (to the right).
The line originally passed under this bridge (and another) to merge with the line from Wansford/Peterborough.
I imagine if you were to wish to connect to the Corby line, you would essentially be replacing that bridge with something that took a spur out towards the camera. That would mean either infilling where the bridge is as embankment, or building some additional piers and replacing the bridge deck. The Luffenham line is in a cutting, which you would need to infill and regrade.
You cannot connect further left, as the land drops away and the viaduct begins. You cannot connect further to the right, as the land rises and there is a tunnel.
You cannot connect further left, as the land drops away and the viaduct begins. You cannot connect further to the right, as the land rises and there is a tunnel.
It's quite hard to see in this photo, but the Luffenham line is the row of trees in the top left, with the strip of grass in the field just in front of them. You can see the way the land is rising towards the hill, and just on the very left below the horizon, you can see the Corby line.
The big green area just above the Luffenham line is the hill which the tunnel goes through!
The small valley/dip in the photo is a tributary which joins the River Welland. There is some sort of bridge over it which isn't visible (and I didn't explore).
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I don't think this would be impossible, but you'd need to infill the current cutting and remove a road bridge which goes over the line, just before the intersection. You would also need to do some fairly significant bridge work including removing the current bridge deck and essentially rebuilding it with a spur off to Luffenham.
I'm not sure what gradient you'd end up with on the approach to the junction, however. It's difficult to say as the old alignment is very overgrown.